11189501889 has 4 divisors (see below), whose sum is σ = 14919335856. Its totient is φ = 7459667924.

The previous prime is 11189501887. The next prime is 11189501893. The reversal of 11189501889 is 98810598111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98810598111 = 3 ⋅32936866037.

It is a cyclic number.

It is not a de Polignac number, because 11189501889 - 2¹ = 11189501887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11189501887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1864916979 + ... + 1864916984.

It is an arithmetic number, because the mean of its divisors is an integer number (3729833964).

Almost surely, 2^11189501889 is an apocalyptic number.

It is an amenable number.

11189501889 is a deficient number, since it is larger than the sum of its proper divisors (3729833967).

11189501889 is an equidigital number, since it uses as much as digits as its factorization.

11189501889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3729833966.

The product of its (nonzero) digits is 207360, while the sum is 51.

The spelling of 11189501889 in words is "eleven billion, one hundred eighty-nine million, five hundred one thousand, eight hundred eighty-nine".